CH query

[stk31]

I've just moved into a new house and had a few problems with the CH system. Just trying to understand what does what etc...

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• stk31
• 16 Apr 2008
• 1

Could someone please help me to identify the 2 red headed taps in the picture and let me know what they do, the lower one was virtually closed when I was draining down and I'm not sure what position it should be in.

Am now having problems with a few cold rads, have tried balancing but not really having much success so far

Thanks in advance

 

[seco services]

bottom gate valve is a bypass back to the return pipework, and top gate valve is cylinder return to adjust flow

 

[ChrisR]

The lower one's a bypass, which connects Flow straight to Return on the boiler. Normally open only about one turn of the red head, but what's the boiler?

The other one is to balance the HW heating circuit with the rest - ie the rads. That also doesn't need to be open much, maybe 2 turns! The more it's open, the more the HW will get priority when both CH and HW are on.

 

[stk31]

The boiler is an Ideal Icos condensing boiler

 

[ChrisR]

SIncere condolences. See //www.diynot.com/forums/viewtopic.php?t=131948

ANd you have the wrong bypass - it should be an automatic one. If the heat exchanger splits, you'll know why. Meantime, open it more than I said!

 

[stk31]

Thanks for the replies, how much more should I open it, 2 turns ?